Merging r315086:
------------------------------------------------------------------------
r315086 | compnerd | 2017-10-06 11:06:59 -0700 (Fri, 06 Oct 2017) | 8 lines
Bitcode: add an auto-upgrade for LTO section name
The bitcode reader looks specifically for `__DATA, __objc_catlist` as a
section name. However, SVN r304661 removed the spaces (the two names
are functionally equivalent but do not compare equally
lexicographically). This causes compatibility issues. Add an
auto-upgrade path for removing the spaces as well as use the new name in
the LTO plugin.
------------------------------------------------------------------------
git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_50@318851
91177308-0d34-0410-b5e6-
96231b3b80d8